i have a bad vibration when i'm around 35-55mph, goes away a little as i go faster or let off the gas. it's a 01' 350 with 7.3 and 4x4. could this be a u joint issue?
Welcome to the wobble. Start with the carrier bearing in the rear driveshaft (if you have a 2 piece ) and the u joints , check your tie rods and ball joints, get your tires re balanced,check the shocks .Good luck !
it only has 41K on it. it was the U-Joint at the back. replaced all of them, shake is all gone!!